274 lines
7.9 KiB
Bash
274 lines
7.9 KiB
Bash
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#!/bin/bash
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#
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# RESUME DOWNLOAD DETAILS
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# swupdate can retry and resume a broken download. See -t and -r arguments
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# in do_swupdate call at end of this file.
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#
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# Implementation in swupdate:
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# https://github.com/sbabic/swupdate/blob/master/corelib/downloader.c
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#
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# Note that it only resumes the download when kept running: after the
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# swupdate process has stopped, for example because of a reboot, it will
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# restart. Improving this, without adding an intermediate scratchpad on disk,
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# is not straightforward: the download is streamed straight into ubifs on the
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# CCGX, and re-opening an unfinished ubifs volume is not a good idea.
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#
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# Resuming while online file has changed:
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# When a new version is made available, the venus-swu-[machine].swu file on
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# the webserver is replaced with the newer one. Devices busy starting a
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# resume after that should not accidentally resume the download with the new
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# file. A waste of bandwidth and possible leads to installing and booting
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# into a corrupt rootfs. (What type of CRC or hash does swupdate on the swu
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# file after download?)
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#
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# This is prevented this by dowloading the file that contains its version
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# in the name. Therefore the webserver should always have the latest file
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# available under two names:
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# venus-swu-[machine].swu
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# venus-swu-[machine]-[build-date-time].swu
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#
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# Best sequence of installing the files on the webserver is:
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# 1. venus-swu-[machine]-[build-date-time].swu
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# 2. venus-swu-[machine].swu
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# 3. rename or remove the old build-date-time file: force the running
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# downloads to cancel.
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. $(dirname $0)/functions.sh
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get_setting() {
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dbus-send --print-reply=literal --system --type=method_call \
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--dest=com.victronenergy.settings \
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"/Settings/System/$1" \
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com.victronenergy.BusItem.GetValue |
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awk '{ print $3 }'
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}
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get_swu_version() {
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if [ -f "$1" ]; then
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# local file
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cmd="head -n 10"
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else
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# url, probably
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cmd="curl -s -r 0-999 -m 30 --retry 3"
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fi
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$cmd "$1" |
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cpio --quiet -i --to-stdout sw-description 2>/dev/null |
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sed -n '/venus-version/ {
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s/.*"\(.*\)".*/\1/
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p
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q
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}'
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}
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swu_status() {
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printf '%s\n' "$1" ${offline:+""} "$2" >$status_file
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}
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status_file=/var/run/swupdate-status
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start_log
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echo "*** Checking for updates ***"
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echo "arguments: $@"
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while [[ $# -gt 0 ]]; do
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case "$1" in
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-auto)
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update=auto
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auto=1
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;;
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-check) update=2 ;;
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-update) update=1 ;;
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-delay) delay=y ;;
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-force) force=y ;;
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-swu)
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shift
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force=y
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forceswu="$1"
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update="1"
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;;
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-swubase)
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shift
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swubase="$1"
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;;
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-offline)offline=y ;;
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-help) help=y ;;
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*) echo "Invalid option $arg"
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exit 1
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;;
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esac
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shift
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done
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if [ "$help" = y ]; then
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echo "check-updates.sh: wrapper script around swupdate"
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echo
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echo "Arguments:"
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echo "-auto script will check automatic update setting in localsettings."
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echo " use this when calling from cron or after boot."
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echo "-delay sleep for a random delay before starting the download of"
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echo " new image (to prevent thousands of units starting the"
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echo " download at the same time)."
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echo " use this when calling from cron or after boot."
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echo "-check (only) check if there is a new version available."
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echo "-update check and, when necessary, update."
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echo "-force force downloading and installing the new image, even if its"
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echo " version is older or same as already installed version."
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echo "-swu url forcefully install the swu from given url"
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echo "-swubase url use given url as a base, rather than the default:"
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echo " https://updates.victronenergy.com/feeds/venus/[feed]/"
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echo "-offline search for updates on removable storage devices"
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echo "-help this help"
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echo
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echo "Behaviour when called without any arguments is same as -update"
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exit
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fi
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if [ "${update:-auto}" = auto ]; then
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update=$(get_setting AutoUpdate)
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case $update in
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0) echo "Auto-update disabled, exit."
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exit
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;;
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1) ;;
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2) ;;
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*) echo "Invalid AutoUpdate value $update, exit."
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exit 1
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;;
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esac
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fi
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if [ "$delay" = y ]; then
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DELAY=$[ $RANDOM % 3600 ]
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echo "Sleeping for $DELAY seconds"
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sleep $DELAY
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fi
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machine=$(cat /etc/venus/machine)
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swu_name=$(cat /etc/venus/swu-name)
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swu_base=${swu_name}-${machine}
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if [[ $forceswu ]]; then
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echo "Updating to $forceswu"
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SWU="$forceswu"
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# The version is not known, since the stream might not support seeking,
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# like stdin for example. So as a best effort, use the url instead.
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swu_version="$forceswu"
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elif [ "$offline" = y ]; then
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echo "Searching for update on SD/USB..."
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for dev in /media/*; do
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# reverse order gives preference to an unversioned file
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# followed by that with the most recent timestamp if
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# multiple files exist
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#
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# MIND IT: There are ccgx and venusgx around which only check for
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# venus-swu-${machine}*.swu so don't make an incompatible ccgxv2 or
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# beaglebone-new MACHINE, since they are also accepted by the old ones.
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SWU=$(ls -r $dev/${swu_base}-*.swu $dev/${swu_base}.swu 2>/dev/null | head -n1)
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test -f "$SWU" && break
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done
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if [ -f "$SWU" ]; then
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echo "Update found on $dev"
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feed="$dev"
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else
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echo "Update not found. Exit."
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swu_status -3
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exit 1
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fi
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else
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feed=$(get_setting ReleaseType)
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case $feed in
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0) feed=release ;;
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1) feed=candidate ;;
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2) feed=testing ;;
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3) feed=develop ;;
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*) echo "Invalid release type, exit."
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exit 1
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;;
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esac
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if [ -z "$swubase" ]; then
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swubase=https://static.innovenergy.ch/firmware/venus/${feed}/
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fi
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URL_BASE=${swubase}images/${machine}
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SWU=${URL_BASE}/${swu_base}.swu
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fi
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if [[ -z $forceswu ]]; then
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echo "Retrieving latest version... (from $SWU)"
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swu_status 1
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cur_version=$(get_version)
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swu_version=$(get_swu_version "$SWU")
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if [ -z "$swu_version" ]; then
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echo "Unable to retrieve latest software version, exit."
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swu_status -1
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exit 1
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fi
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cur_build=${cur_version%% *}
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swu_build=${swu_version%% *}
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if [ "$offline" != y ]; then
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# change SWU url into the full name
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SWU=${URL_BASE}/${swu_base}-${swu_version// /-}.swu
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fi
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echo "installed: $cur_version"
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echo "available: $swu_version"
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if [ "$force" != y -a \( "${swu_build}" = "${cur_build}" -o "$auto" = "1" -a "${swu_build}" -le "${cur_build}" \) ]; then
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echo "No newer version available, exit."
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swu_status 0
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exit
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fi
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if [ "$update" != 1 ]; then
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swu_status 0 "$swu_version"
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exit
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fi
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fi
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altroot=$(get_altrootfs)
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if [ -z "$altroot" ]; then
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echo "Unable to determine rootfs. Exit."
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swu_status -2 "$swu_version"
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exit 1
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fi
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if ! lock; then
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echo "Can't get lock, other process already running? Exit."
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swu_status 0 "$swu_version"
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exit 1
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fi
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echo "Starting swupdate to install version $swu_version ..."
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swu_status 2 "$swu_version"
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# backup rootfs is about to be replaced, remove its version entry
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get_version >/var/run/versions
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if [ -f "$SWU" ]; then
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swupdate_flags="-i"
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else
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swupdate_flags="-t 30 -r 3 -d"
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fi
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if do_swupdate -v $swupdate_flags "$SWU" -e "stable,copy$altroot"; then
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echo "do_swupdate completed OK. Rebooting"
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swu_status 3 "$swu_version"
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reboot
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else
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echo "Error, do_swupdate stopped with exitcode $?, unlock and exit."
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swu_status -2 "$swu_version"
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fi
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unlock
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